Drilldown: Patents

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Patents > Year filed: 1916 & Grant date: 1920 & Number of text pages: 2-3

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airplane (9) · design (7) · construction (7) · frame (7) · Motors (6) · propellers (4) · LTA (4) · aerodynamics (3) · airship (3) · control (3) · subsystem (3) · projectile (2) · propulsion (2) · biplane (2) · Dirigibles (2) · wings (2) · compartments (2)
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